Record Details

Misting of Newtonian Liquids in Forward Roll Coating

DSpace at IIT Bombay

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Field Value
 
Title Misting of Newtonian Liquids in Forward Roll Coating
 
Creator OWENS, MS
VINJAMUR, M
SCRIVEN, LE
MACOSKO, CW
 
Subject HIGH-SPEED
INSTABILITY
FLUIDS
FILMS
FLOW
 
Description Misting of Newtonian liquids, in the film-split region of two counter rotating rigid and deformable cylinders was visualized with standard and high-speed cameras. Flow instabilities begin with ribbing and eventually lead to generation of air-borne droplets called mist. As speed was raised, a uniform film thickness evolved into one with ribs, which evolved into continuous sheets of liquid extending downstream of the gap between the cylinders. The edge of each sheet formed a rim whose two ends were attached to the ribs on the cylinders. Still images via high-speed photography revealed a new mechanism for mist generation: the sheets extended downstream, became unstable and ruptured to produce air-borne droplets. A droplet time-of-flight measurement technique quantified the effect of process settings (speed and speed ratio) and material properties (viscosity and surface tension) on droplet size, count, and mass concentration of mist.
 
Publisher AMER CHEMICAL SOC
 
Date 2012-06-26T08:52:14Z
2012-06-26T08:52:14Z
2011
 
Type Article
 
Identifier INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,50(6)3212-3219
0888-5885
http://dx.doi.org/10.1021/ie100747w
http://dspace.library.iitb.ac.in/jspui/handle/100/14229
 
Language English